Not until you get under there to do a simple task and come out with more oil on you than a bad oil change. My 510 I've never oiled underneath and no rust but then I don't drive on sandy salty winter roads and rarely in the rain except for Summit Point 8>) It's all about modern rust proofing before paint. Oiling is old school I don't care because I don't work on my car DOH!!!

"Lastnight the wife said oh boy when your dead you can't take nothing with you but your soul oh "Think" - John Lennon

First stage has begun and is about 60% done. He went over the right side of the hood with a small buffer and it's amazing!!!! He has to do a whole other polish with a finer compound and then hand wax. It feels like glass in the spots he already did.

We have an almost identical 4-dr in this frosty green color in Redwood City, CA. If I see them again, I'll send you a picture. I'm fairly certain the old couple that drives it around are the original owners and it's their daily driver!